Demo releasing on June 14th 2025

New Trailer to the game has now dropped

CHAPTER 1 POSTER

New Maps in the development of the Project.

just for some peoples info this project had started development on June 26th 2025 and so far we have this much of the project done. we will continue to make more updates to the gamejolt page regarding development of this fangame.

Update on the Undertale: TSOTC battle system. Also sorry about the mic quality i was not home at the time.

W.I.P: First look at the first boss fight.

Full Neo Mr.Tenna Boss Fight for Undertale: The Secrets of the Core

Getting ready for Chapter One Release in 2026.

Preview of The Ruins for Undertale: The Secrets of the Core